Add time utils (#10849)

### What problem does this PR solve?

- Add time utilities and unit tests

### Type of change

- [x] Refactoring

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

api/apps/api_app.py

@@ -33,7 +33,7 @@ from api.db.services.knowledgebase_service import KnowledgebaseService
 from api.db.services.task_service import queue_tasks, TaskService
 from api.db.services.user_service import UserTenantService
 from api import settings
-from api.utils import get_uuid, current_timestamp, datetime_format
+from api.utils import get_uuid
 from api.utils.api_utils import server_error_response, get_data_error_result, get_json_result, validate_request, \
     generate_confirmation_token
 
@@ -41,6 +41,7 @@ from api.utils.file_utils import filename_type, thumbnail
 from rag.app.tag import label_question
 from rag.prompts.generator import keyword_extraction
 from rag.utils.storage_factory import STORAGE_IMPL
+from common.time_utils import current_timestamp, datetime_format
 
 from api.db.services.canvas_service import UserCanvasService
 from agent.canvas import Canvas

api/apps/system_app.py

@@ -24,7 +24,6 @@ from api.db.services.api_service import APITokenService
 from api.db.services.knowledgebase_service import KnowledgebaseService
 from api.db.services.user_service import UserTenantService
 from api import settings
-from api.utils import current_timestamp, datetime_format
 from api.utils.api_utils import (
     get_json_result,
     get_data_error_result,
@@ -32,6 +31,7 @@ from api.utils.api_utils import (
     generate_confirmation_token,
 )
 from api.versions import get_ragflow_version
+from common.time_utils import current_timestamp, datetime_format
 from rag.utils.storage_factory import STORAGE_IMPL, STORAGE_IMPL_TYPE
 from timeit import default_timer as timer
 

api/apps/tenant_app.py

@@ -23,7 +23,8 @@ from api.db import UserTenantRole, StatusEnum
 from api.db.db_models import UserTenant
 from api.db.services.user_service import UserTenantService, UserService
 
-from api.utils import get_uuid, delta_seconds
+from api.utils import get_uuid
+from common.time_utils import delta_seconds
 from api.utils.api_utils import get_json_result, validate_request, server_error_response, get_data_error_result
 from api.utils.web_utils import send_invite_email
 

api/apps/user_app.py

@@ -34,13 +34,8 @@ from api.db.services.file_service import FileService
 from api.db.services.llm_service import get_init_tenant_llm
 from api.db.services.tenant_llm_service import TenantLLMService
 from api.db.services.user_service import TenantService, UserService, UserTenantService
-from api.utils import (
-    current_timestamp,
-    datetime_format,
-    download_img,
-    get_format_time,
-    get_uuid,
-)
+from common.time_utils import current_timestamp, datetime_format, get_format_time
+from api.utils import download_img, get_uuid
 from api.utils.api_utils import (
     construct_response,
     get_data_error_result,